An image processing apparatus includes a normal print order setter, a multiple print order and base material setter, and a preview image generator. The normal print order setter is configured to set types of color materials used in printing document data on a base material, and order of overlaying of the color materials during printing. The multiple print order and base material setter is configured to set at least one of a number of repetitions of printing based on the types of color materials and the order of overlaying of the color materials and a type of base material. The preview image generator is configured to generate a preview image simulating a print result of the document data on a basis of information set by the normal print order setter and the multiple print order and base material setter.